NPM PPCI7443, Руководство пользователя

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Operation Theorem
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91
x moving ratio.
Relative Function:
_7443_set_trigger_comparator(), _7443_build_comp_function(),
_7443_build_comp_table(), _7443_set_auto_compare(),
_7443_check_compare_data(),_7443_set_trigger_type ()
: refer to section 6.16
4.7.3 Position Latch
Position latch is a contrary function to position compare. The position
compare function is to trigger a pulse output via CMP, when the comparing
condition comes into existence. Yet, the position latch function is to receive
pulse input via LTC, and then capture all counters’ (refer to section 4.4)
data in that instant. The latency between occurring of latch signal and
finishing of position capturing is extremely short, for the latching procedure
is made by hardware. Only the last 2 axes (2 and 3) can do position latch
function. LTC3 (Axis 2) and LTC4 (Axis 3) are used to receive latch pulse.
To set the latch logic: _7443_set_ltc_logic().
To get the latched values of counters: _7443_get_latch_data(AxisNo,
CntNo, Pos). The second parameter “CntNo” is used to indicate the
counter of which the latched data will be read. And, it can latched even
except for the LTC pin by the _7443_set_enable_inp() command.
Relative Function:
_7443_set_ltc_logic(),_7443_get_latch_data() : refer to section 6.16